Version:            (using KDE KDE 3.5.2)
Installed from:    Debian testing/unstable Packages

I was running KDE 3.5.1 and accessing www.netbank.commbank.com.au just fine. After upgrading to 3.5.2 I only ever get "An error occurred while loading http://www.netbank.commbank.com.au/:
Could not connect to host www3.netbank.commbank.com.au.". Accessing https://www3.netbank.commbank.com.au directly gives the same error. Firefox accesses the site just fine.

I tried downgrading back to 3.5.1 just to make sure. Only downgrading the konqueror package didn't fix the problem, but also downgrading kdelibs4c2a and necessary dependencies after that *did* fix it. (Some packages had to come from 3.4, but I'm quite sure the regression doesn't go that far back. You can see the apt results that achieved this at the end.)

It was working, but it's not now. I can't even get as far as the login screen. Konqueror acts as if the site is down or something, but Firefox just goes right ahead and connects without trouble.

~~~~~~~~
brendon@phi:~$ sudo aptitude install konqueror=4:3.5.1-1
Reading package lists... Done
Building dependency tree... Done
Reading extended state information
Initializing package states... Done
Reading task descriptions... Done
Building tag database... Done
The following packages are BROKEN:
  konqueror
The following packages have been kept back:
  lm-sensors x-window-system-core xbase-clients xfonts-100dpi xfonts-75dpi xfonts-base xfonts-scalable xfs xlibmesa-dri
  xlibs xlibs-static-dev xscreensaver xscreensaver-gl xutils
0 packages upgraded, 0 newly installed, 1 downgraded, 0 to remove and 14 not upgraded.
Need to get 0B/2086kB of archives. After unpacking 20.5kB will be freed.
The following packages have unmet dependencies:
  konqueror: Depends: kcontrol (= 4:3.5.1-1) but 4:3.5.2-1 is installed.
             Depends: kdebase-kio-plugins (= 4:3.5.1-1) but 4:3.5.2-1 is installed.
             Depends: kdesktop (= 4:3.5.1-1) but 4:3.5.2-1 is installed.
             Depends: kfind (= 4:3.5.1-1) but 4:3.5.2-1 is installed.
Resolving dependencies...
The following actions will resolve these dependencies:

Downgrade the following packages:
kcontrol [4:3.5.2-1 (now) -> 4:3.5.1-1 (testing)]
kdebase-bin [4:3.5.2-1 (now) -> 4:3.5.1-1 (testing)]
kdebase-data [4:3.5.2-1 (now) -> 4:3.5.1-1 (testing)]
kdebase-kio-plugins [4:3.5.2-1 (now) -> 4:3.5.1-1 (testing)]
kdesktop [4:3.5.2-1 (now) -> 4:3.5.1-1 (testing)]
kdm [4:3.5.2-1 (now) -> 4:3.5.1-1 (testing)]
kfind [4:3.5.2-1 (now) -> 4:3.5.1-1 (testing)]
kicker [4:3.5.2-1 (now) -> 4:3.5.1-1 (testing)]
kpersonalizer [4:3.5.2-1 (now) -> 4:3.5.1-1 (testing)]
ksmserver [4:3.5.2-1 (now) -> 4:3.5.1-1 (testing)]
ksplash [4:3.5.2-1 (now) -> 4:3.5.1-1 (testing)]

Score is -280

Accept this solution? [Y/n/q/?]
The following packages will be DOWNGRADED:
  kcontrol kdebase-bin kdebase-data kdebase-kio-plugins kdesktop kdm kfind kicker konqueror kpersonalizer ksmserver
  ksplash
The following packages have been kept back:
  lm-sensors x-window-system-core xbase-clients xfonts-100dpi xfonts-75dpi xfonts-base xfonts-scalable xfs xlibmesa-dri
  xlibs xlibs-static-dev xscreensaver xscreensaver-gl xutils
0 packages upgraded, 0 newly installed, 12 downgraded, 0 to remove and 14 not upgraded.

~~~~~~~~
Tested and problem remains.
~~~~~~~~

brendon@phi:~$ sudo aptitude install kdelibs4c2a=4:3.5.1-2
Reading package lists... Done
Building dependency tree... Done
Reading extended state information
Initializing package states... Done
Reading task descriptions... Done
Building tag database... Done
The following packages are BROKEN:
  amarok amarok-xine cervisia kaddressbook kdelibs-bin kdelibs4-dev kdelibs4c2a kdepim-kfile-plugins kdepim-kio-plugins
  kdesdk-kio-plugins kfilereplace kitchensync klinkstatus kmail knode knotes kommander kompare kontact korganizer
  kxsldbg libcvsservice0 libkcal2b libkdepim1a libkleopatra1 libkmime2 libkonq4 libkpimexchange1 libkpimidentities1
  libksieve0 libktnef1 quanta
The following packages have been kept back:
  axiom axiom-databases axiom-doc axiom-graphics axiom-graphics-data axiom-hypertex axiom-hypertex-data axiom-source
  dosage kaddressbook-plugins kate-plugins kdelibs-data kicker-applets klibido konq-plugins libacl1 libacl1-dev
  libattr1 libattr1-dev libavahi-common-dev libavahi-common3 libmysqlclient15off libpanel-applet2-0 libpq4 libssl0.9.7
  libsvn0 lm-sensors mysql-common x-window-system-core xbase-clients xfonts-100dpi xfonts-75dpi xfonts-base
  xfonts-scalable xfs xlibmesa-dri xlibs xlibs-static-dev xscreensaver xscreensaver-gl xutils
0 packages upgraded, 0 newly installed, 1 downgraded, 0 to remove and 43 not upgraded.
Need to get 0B/9410kB of archives. After unpacking 53.2kB will be freed.
The following packages have unmet dependencies:
  libktnef1: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  kdelibs4c2a: Depends: kdelibs-bin (= 4:3.5.1-2) but 4:3.5.2-1 is installed and it is kept back.
  cervisia: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  knode: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  kdepim-kio-plugins: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  libkcal2b: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  kfilereplace: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  kaddressbook: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  kontact: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  libkpimexchange1: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  klinkstatus: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  korganizer: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  libkonq4: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  libksieve0: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  amarok-xine: Depends: kdelibs4c2a (>= 4:3.5.1-4) but 4:3.5.1-2 is to be installed.
  libcvsservice0: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  amarok: Depends: kdelibs4c2a (>= 4:3.5.1-4) but 4:3.5.1-2 is to be installed.
  libkdepim1a: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  knotes: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  kommander: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  kdelibs4-dev: Depends: kdelibs4c2a (= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  kdepim-kfile-plugins: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  libkmime2: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  kdelibs-bin: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  libkleopatra1: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  kxsldbg: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  kdesdk-kio-plugins: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  quanta: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  kompare: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  libkpimidentities1: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  kmail: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
  kitchensync: Depends: kdelibs4c2a (>= 4:3.5.2-1) but 4:3.5.1-2 is to be installed.
Resolving dependencies...
The following actions will resolve these dependencies:

Remove the following packages:
amarok-engines
kdesdk-kio-plugins
kfilereplace
klinkstatus
kommander
kxsldbg
libkleopatra1
libmysqlclient15off
quanta

Install the following packages:
libkleopatra0a [4:3.4.3-1 (testing)]
libmysqlclient15 [5.0.18-9 (testing, unstable, now)]

Downgrade the following packages:
amarok [1.4-beta2-3 (experimental, now) -> 1.3.8-1 (testing)]
amarok-xine [1.4-beta2-3 (experimental, now) -> 1.3.8-1 (testing)]
cervisia [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
kaddressbook [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
kaddressbook-plugins [4:3.5.1-1 (now) -> 4:3.4.3-1 (testing)]
kdelibs-bin [4:3.5.2-1 (now) -> 4:3.5.1-2 (testing)]
kdelibs4-dev [4:3.5.2-1 (now) -> 4:3.5.1-2 (testing)]
kdepim-kfile-plugins [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
kdepim-kio-plugins [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
kitchensync [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
kmail [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
knode [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
knotes [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
kompare [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
kontact [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
korganizer [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
libcvsservice0 [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
libkcal2b [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
libkdepim1a [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
libkmime2 [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
libkonq4 [4:3.5.2-1 (unstable, now) -> 4:3.5.1-1 (testing)]
libkpimexchange1 [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
libkpimidentities1 [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
libksieve0 [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]
libktnef1 [4:3.5.2-1 (unstable, now) -> 4:3.4.3-1 (testing)]

Leave the following dependencies unresolved:
quanta-data recommends quanta (= 4:3.5.2-1)
Score is -2157

Accept this solution? [Y/n/q/?] Y
The following packages are unused and will be REMOVED:
  cervisia kompare libgpod0 libifp4
The following NEW packages will be automatically installed:
  libkleopatra0a libmysqlclient15
The following packages will be automatically REMOVED:
  amarok-engines kdesdk-kio-plugins kfilereplace klinkstatus kommander kxsldbg libkleopatra1 libmysqlclient15off quanta
The following packages will be DOWNGRADED:
  amarok amarok-xine kaddressbook kaddressbook-plugins kdelibs-bin kdelibs4-dev kdelibs4c2a kdepim-kfile-plugins
  kdepim-kio-plugins kitchensync kmail knode knotes kontact korganizer libcvsservice0 libkcal2b libkdepim1a libkmime2
  libkonq4 libkpimexchange1 libkpimidentities1 libksieve0 libktnef1
The following packages have been kept back:
  axiom axiom-databases axiom-doc axiom-graphics axiom-graphics-data axiom-hypertex axiom-hypertex-data axiom-source
  dosage kate-plugins kdelibs-data kicker-applets klibido konq-plugins libacl1 libacl1-dev libattr1 libattr1-dev
  libavahi-common-dev libavahi-common3 libpanel-applet2-0 libpq4 libssl0.9.7 libsvn0 lm-sensors mysql-common
  x-window-system-core xbase-clients xfonts-100dpi xfonts-75dpi xfonts-base xfonts-scalable xfs xlibmesa-dri xlibs
  xlibs-static-dev xscreensaver xscreensaver-gl xutils
The following NEW packages will be installed:
  libkleopatra0a libmysqlclient15
The following packages will be REMOVED:
  amarok-engines kdesdk-kio-plugins kfilereplace klinkstatus kommander kxsldbg libkleopatra1 libmysqlclient15off quanta
0 packages upgraded, 2 newly installed, 24 downgraded, 13 to remove and 39 not upgraded.

~~~~~~~~
Tested and problem has gone.